[PATCH 2/2] GPIO: 74xx-mmio: Add DT bindings documentation
From: Alexander Shiyan <hidden>
Date: 2014-09-19 07:40:04
Also in:
linux-gpio
Subsystem:
gpio subsystem, open firmware and flattened device tree bindings, the rest · Maintainers:
Linus Walleij, Bartosz Golaszewski, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
This patch adds DT binding documentation for the 74xx-mmio GPIO driver. Signed-off-by: Alexander Shiyan <redacted> --- .../devicetree/bindings/gpio/gpio-74xx-mmio.txt | 30 ++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpio/gpio-74xx-mmio.txt
diff --git a/Documentation/devicetree/bindings/gpio/gpio-74xx-mmio.txt b/Documentation/devicetree/bindings/gpio/gpio-74xx-mmio.txt
new file mode 100644
index 0000000..202dce7
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/gpio-74xx-mmio.txt@@ -0,0 +1,30 @@ +* 74XX MMIO GPIO driver + +Required properties: +- compatible: Should contain one of the following: + "ti,74ahc1g125": for 74AHC1G125 (1-bit Input), + "ti,74auc1g174": for 74AUC1G74 (1-bit Output), + "ti,74lvc2g125": for 74LVC2G125 (2-bit Input), + "ti,74hc74": for 74HC74 (2-bit Output), + "ti,74hc125": for 74HC125 (4-bit Input), + "ti,74hc175": for 74HC175 (4-bit Output), + "ti,74hc365": for 74HC365 (6-bit Input), + "ti,74hc174": for 74HC174 (6-bit Output), + "ti,74hc244": for 74HC244 (8-bit Input), + "ti,74hc273": for 74HC273 (8-bit Output), + "ti,74ac1624": for 74AC1624 (16-bit Input), + "ti,74ac16374": for 74AC16374 (16-bit Output). +- reg: Physical base address and length where IC resides. +- gpio-controller: Marks the device node as a gpio controller. +- #gpio-cells: Should be two. The first cell is the pin number and + the second cell is used to specify the GPIO polarity: + 0 = Active High, + 1 = Active Low. + +Example: + ctrl: gpio@30008004 { + compatible = "ti,74hc174"; + reg = <0x30008004 0x1>; + gpio-controller; + #gpio-cells = <2>; + };
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1.8.5.5